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new gun

A place to ask general spud cannon related questions.
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new gun

Unread postAuthor: DAltar » Wed Nov 16, 2005 6:36 pm

i am building this gun and the spud gun calculator will not work so any ideas on how powerful it may be?
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Unread postAuthor: DAltar » Wed Nov 16, 2005 6:37 pm

the air chamber is 3 inch, the barrel is one inch, the street elbows are 3 inch the valve is a 1 inch modified sprinkler valve from spudtech
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Unread postAuthor: boilingleadbath » Wed Nov 16, 2005 10:33 pm

How long are these chambers? It's quit obviously not drawn to scale.
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Unread postAuthor: DAltar » Thu Nov 17, 2005 2:44 pm

sorry the scanner must have not copied the lengths and diameter of the pipes and fittings when i changed it to jpeg form.

26"x3" air chamber

36"x1" for barrel

pressure being used on average- 40-60 psi
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Unread postAuthor: boilingleadbath » Thu Nov 17, 2005 3:24 pm

The GGDT results:
The energies with a 25g projectile:
40 PSI: 61 foot/lbs
60 PSI: 87 foot/lbs
.22 lr: ~100-110 foot/lbs (for reference)

Make a barrel extention, buddy... and you'd probably be better off with a 1.25" barrel. (but not by much)
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Unread postAuthor: DAltar » Thu Nov 17, 2005 6:02 pm

ok thank you
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